package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.utils.HttpUtils;
import com.atguigu.common.utils.R;
import com.atguigu.common.vo.SocialUser;
import com.atguigu.gulimall.auth.service.UserFeignService;
import com.atguigu.common.vo.UserResponseVo;
import org.apache.http.HttpResponse;
import org.apache.http.util.EntityUtils;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javax.annotation.Resource;
import javax.servlet.http.HttpSession;
import java.util.HashMap;
import java.util.Map;

/**
 * @version 1.0
 * @Author yanjingren
 * @Date 2021/6/11
 * @Description com.atguigu.gulimall.auth.controller
 */
@Controller
public class OAuth2Controller {

    @Resource
    private UserFeignService userFeignService;

    @GetMapping("/oauth2.0/weibo/success")
    public String weibo(@RequestParam("code") String code, HttpSession session) throws Exception {
        Map<String, String> map = new HashMap<>();
        map.put("client_id", "3880142051");
        map.put("client_secret", "d7b91745433368df5171a00b0f55cd0c");
        map.put("grant_type", "authorization_code");
        map.put("redirect_uri", "http://auth.gulimall.com/oauth2.0/weibo/success");
        map.put("code", code);
        // 根据code换取accessToken
        HttpResponse response = HttpUtils.doPost("https://api.weibo.com", "/oauth2/access_token", "post", new HashMap<>(), map, new HashMap<>());
        // 处理
        if (response.getStatusLine().getStatusCode() == 200) {
            String json = EntityUtils.toString(response.getEntity());
            SocialUser socialUser = JSON.parseObject(json, SocialUser.class);
            // 知道当前是哪个社交用户
            // 1.当前用户如果是第一次进网站，自动注册进来（为当前社交用户生成一个会员信息账号，以后这个社交账号就关联该会员账号）
            // 登录或者注册这个社交用户
            R r = userFeignService.oauthLogin(socialUser);
            if (r.getCode() == 0) {
                UserResponseVo data = r.getData(new TypeReference<UserResponseVo>() {});
                System.out.println("登录成功：" + data);
                // 第一次使用session，命令浏览器保存卡号 JESESSIONID，以后浏览器访问哪个网站，就会带上这个网站的cookie
                // 子域之间，gulimall.com，auth.gulimall.com，order.gulimall.com
                // 发卡的时候（指定域名为父域名），即使是子域系统发的卡，也能让父域直接使用
                session.setAttribute("loginUser", data);
                // 登录成功就跳回首页
                return "redirect:http://gulimall.com";
            } else {
                return "redirect:http://auth.gulimall.com/login.html";
            }
        } else {
            return "redirect:http://auth.gulimall.com/login.html";
        }
    }
}
